Hello,
Thank you for posting in Q&A forum.
To further troubleshoot this issue, please try below method:
1.Check the network connectivity by ping/telnet command between windows client and the dc.
2.If the connectivity is fine, please check if network discovery is enabled on dc.
Path: Control Panel > Network and Sharing Center > Change advanced sharing settings > network discovery
3.Try to map network drive of dc instead and see if it helps.
Hope this answer can help you well.
Best regards,
Jill Zhou